MESON Chess Problem Database
Problem Display
PID: 232774 (2qR2r1/b5N1/1nbB4/4P1p1/1P1k4/2N5/1nQP1p1r/1K3B2 w - - 0 1)
Hoy, Paul
Freie Presse, 1973
#2
10 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Sxf5#
- 1...Qa6
- 2.Sf5#
- 2.Se6#
- 1...Qe6
- 2.Sxe6#
- 1...Qb7
- 2.Sf5#
- 2.Se6#
- 1...Qc7
- 2.Sf5#
- 2.Se6#
- 1...Qa8
- 2.Sf5#
- 2.Se6#
- 1...Qb8
- 2.Sf5#
- 2.Se6#
- 1...Qxd8
- 2.Sf5#
- 2.Se6#
- 1...Ba4
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Bb5
- 2.Qe4#
- 1...Bd5
- 2.Se2#
- 2.Sb5#
- 1...Bd7
- 2.Qe4#
- 1...Be8
- 2.Qe4#
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...S2a4
- 2.Qd3#
- 1...S2c4
- 2.Qd3#
- 1...Sd5
- 2.Se2#
- 2.Qe4#
- 1...Sd7
- 2.Sf5#
- 2.Se6#
- 1...Qf5
- Tries
- 1.Bc7+?
- 1...Qd7
- 2.Sf5#
- 2.Se6#
- 1...Qxd8
- 2.Sf5#
- 2.Se6#
- 1...Bd5
- 2.Se2#
- 2.Sb5#
- 2.Qe4#
- 1...Bd7
- 2.Sf5#
- 2.Se6#
- 2.Qe4#
- 1...Sd5
- 2.Se2#
- 2.Qe4#
- 1...Sd7
- 2.Sf5#
- 2.Se6#
- 1...Rxd8!
- 1...Qd7
- 1.Bb8+?
- 1...Qd7
- 2.Sf5#
- 2.Se6#
- 1...Qxd8
- 2.Sf5#
- 2.Se6#
- 1...Bd5
- 2.Se2#
- 2.Sb5#
- 2.Qe4#
- 1...Bd7
- 2.Sf5#
- 2.Se6#
- 2.Qe4#
- 1...Sd5
- 2.Se2#
- 2.Qe4#
- 1...Sd7
- 2.Sf5#
- 2.Se6#
- 1...Rxd8!
- 1...Qd7
- 1.Rxc8?
- threat
- 2.Sf5#
- 2.Se6#
- 1...Sd3
- 2.Qxd3#
- 1...Rh6
- 2.Sf5#
- 1...Re8
- 2.Sf5#
- 1...Rf8
- 2.Se6#
- 1...Be4
- 2.Se6#
- 2.Qxe4#
- 1...Bd5
- 2.Se2#
- 2.Sb5#
- 2.Sf5#
- 1...Bd7
- 2.Qe4#
- 1...Rxg7!
- threat
- 1.Bc7+?
- Keys
- 1.Qf5!
- threat
- 2.Bc5#
- 1...Qxf5+
- 2.Sxf5#
- 1...Be4+
- 2.Qxe4#
- 1...Sd3
- 2.Qxd3#
- 1...Bd5
- 2.Sb5#
- 1...Bd7
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sd7
- 2.Se6#
- threat
- 1.Qf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(i);N_GUARD,P_PINQ(C)::S(I),XQ(i)
- Q(i);N_GUARD::S(I),XQ(i)
- B(g);N_GUARD::QAR1(C)
- B(g);N_GUARD,P_PINQ(C)::QAR1(C),XB(g)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Tries
- Try
- B(H);CHECK
- Refutation
- R(j);XR(J)
- Try
- B(H);CHECK
- Refutation
- R(j);XR(J)
- Try
- R(J);XQ(i)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAR1(C),XS(a)
- R(c);::S(I)
- R(j);::S(I)
- B(g);N_GUARD::QAR1(C)
- Refutation
- R(j);XS(I)
- Try
- Actual
- Q(C);
- Threat
- R(J)+B(H),DCHECK
- Vars
- Q(i);CHECK,XQ(C)::S(I),XQ(i)
- B(g);CHECK,N_GUARD::QAR1(C),XB(g)
- S(a);N_GUARD::QAR1(C),XS(a)
- B(g);N_GUARD,SBLOCK::S(E)
- B(g);N_GUARD::QAR1(C)
- S(f);S_CUTB(g)::QAR1(C)
- S(f);S_CUTQ(i)::S(I)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).